Trolley for revolving doors



Jan. 18, 1938. HAGENBOOK 2,105,972

TROLLEY FOR REVOLVING DOORS Filed Aug. 8, 1935 3 Sheets-Sheet l IN V EN TOR.

jzarzafizy n 5001?,

Jan. 18, 1938. M HAGENBQOK 2,105,972

TROLLEY 1 01? REVOLVING DOORS Filed Aug. 8, 1935 I 3 sheets sheet 2 Q R) w [m I h .&*= i

Q l :3 R3

Jan. 18, 1938. I T HAGENBOOK 2,105,972

TROLLEY FOR REVOLVING DOORS Filed Aug. 8, 1955 s Sheets-Sheet 3 I INVENTOR.

BY A'TTORNEY Q 7 Patented Jan. 18, 1938 UNITED STATES PATENT OFFICE TROLLEY FOR REVOLVING DOORS Application August 8, 1935, Serial No. 35,395

19 Claims.

My invention relates broadly to revolving doors and more particularly to a construction of trolley for supporting a, revolving door with respect to the drum of the door.

One of the objects of my invention is to provide a simplified construction of trolley for revolving doors which comprises a relatively small number of parts and is relatively inexpensive in manufacture and assembly.

Another object of my invention is to provide a construction of trolley which may be readily shifted from a central position supporting the revolving door to a retracted position, in which the doors are collapsed adjacent one side of the drum of the revolving door.

Still another object of my invention is to provide a construction of trolley wherein the upper end of the shaft of the revolving door may be readily aligned with the trolley support and maintained in a position for precision operation.

A further object of my invention is to provide a construction of trolley having means for positively locking the trolley in a predetermined central position for journaling the revolving door with respect to the drum of the door while permitting the unlocking thereof when it is desired to shift the collapsed door to one side of the drum.

A still further object of my invention is to provide a construction of gravity actuated locking means for the trolley of a revolving door for insuring the maintenance of the trolley in a position central of the drum, while permitting the unlatching of the gravity actuated look when it is desired to collapse the door and shift the door to one side of the drum.

Another object of my invention is to provide a construction of trolley having means for compensating for differences and inaccuracies in shaft angularity or movement which may exist in various installations in order to provide a product which will meet building requirements generally.

Other and further objects of my invention reside in the construction of thrust bar for journaling the shaft of the revolving door and the automatic locking means for positioning the trolley as will be set forth more fully in the specification hereinafter following by reference to the accompanying drawings, in which:

Figure 1 is a sectional view of a revolving door provided with my improved trolley support; Fig. 2 is a side elevation on an enlarged scale with parts broken away and in section; Fig. 3 is a central vertical longitudinal sectional view taken on line 3-3 of Fig. 4; Fig. 4 is a horizontal sectional view taken on line 4-4 of Fig. 3; Fig. 5 is a transverse vertical section taken on line 5-5 of Fig. 3; Fig. 6 is a side elevation of one of the adjustable trolley retaining lugs; Fig. 7 is a'bottom plan view thereof; Fig. 8 is an end elevation thereof; Fig. 9 is a detailed front elevation of the gravity actuated locking bar; Fig. 10 is a top planview thereof; Fig. 11 is a top plan view of the housing for the trolley support; and Fig. 12 is a, vertical longitudinal section thereof taken on-line |2 l2 of Fig. 11.

Myinvention is directed to a simplified construction of trolley for revolving doors which is simple in construction and comprises a small number of parts capable of inexpensive manufacture and assembly on a quantity production basis. I provide a carrier which is supported on roller members which engage parallel extending shoulders constituting rails formed on a laterally extending member projecting diametrically above the drum of the door. The carrier supports a thrust bar in which the upper end of the rotating shaft of the revolving door is journaled. The

upper end of the shaft of the revolving door is,

mounted in a ring assembly capable of angular displacement in either of two horizontal planes to automatically compensate for inaccuracies which maybe encountered in different revolvingdoor installations. I provide special means for limiting the movement of the carrier to a position centrally of the drum of the revolving door. Gravity actuated locking means which I provide for maintaining the carrier in a position centrally of the door is a particular feature of my invention.

A horizontally extending weighted bar projects on opposite sides of the carrier and is adapted to have its depending ends latched in grooves adjacent cam faces on members adapted to be adjustably secured to the diametrically extending members from which the guide rails are formed. The weighted bar is pivotally mounted with respect to the carrier and in such position that the weighted bar may be readily elevated from a latched position employing a suitable tool, rod, or stick which is projected through the hollow central shaft of the revolving door. After the weighted bar is unlatched from the latching means by the simple raising operation the trolley may be readily rolled to one side of the drum with the wings of the revolving door in collapsed position. When the revolving door is returned to assembled position the trolley is readily locked in the central position for the reason that the ends of the weighted bar ride up on the cam shaped faces of the locking means and latch inthe adjacent notches thereof.

' Referring tothe drawings in detail reference character I designates an assembled revolving door structure operating within a'drum having a base 2 and a ceiling structure 3. The rotating shaft of the revolving door is indicated at ljournaled in bearing 5 in the base 2 and journaled in the trolley structure which I have designated generally at 6 mounted above the ceiling 3. I provide a diametrically extending structural member I mounted above the ceiling 3 of the drum. The structural member 1 is provided with a central slot 8 aligned with a corresponding slot 9 in the ceiling 3, and through which the shaft 4 is adapted to be moved when the revolving door is being shifted from the central assembled position to a collapsed position in which the wings are folded adjacent one side of the drum.

The structural member 7 is shaped to provide parallel extending shoulders ||l which are engaged by sets of roller members II and I2. I provide a carrier constituting the body structure of the trolley as indicated at M having upwardly projecting side walls interconnected by laterally extending end braces H3. The carrier is apertured through the side walls l5 thereof as indicated at |5a and 5b for the passage of rod members I1 and I8 which carry the roller members II and I2 respectively. The carrier I4 is provided with a central aperture I9 in the bottom thereof, through which a sleeve projects upwardly-as shown more particularly in Figs. 3 and 5. The sleeve 20 provides an annular inner wall for the bearing structure. The outer annular wall of the bearing structure is shown at 2| secured to the bottom of the carrier and extending upwardly as shown. I provide a pair of annular plate members 22 and 23 disposed between the upwardly extending housing members 20 and2l, and intermediate the plate members 22 and 23 I provide a lubricating packing ring 24 which may retain lubricating oil for continuous lubricated operation of the revolving door over extended periods of time.

I have illustrated the arrangement of the annular members 22 and 23 separated by the lubricating packing ring 24 merely as one possible arrangement of the bearing structure. I may employ, if desirable, a ball or roller bearing structure for carrying the thrust effective under the weight of the revolving door. The construction which I have selected for the purpose of illustrating an annular member 25 has a downwardly projecting portion which directly enters the space between the cylindrical members 29 and 2| and directly bears upon the annular member 23. The annular member 25 has a pair of upwardly projecting lugs 26 which have diametrically aligned elongated recesses 21 therein. The recesses 21 are elongated to allow a sufficient amount of lost motion to permit inaccuracies which may be encountered in various constructions of revolving doors to be compensated. The recesses 21 are closed by means of strip members 2101. which are secured in position by means of bolts 21b which engage the upper end of the lugs 26. The elongated recesses 21 provide means into which the radially extending pins 28 carried by the annular member 29 extend. The annular member 29 is angularly displaceable within narrow limits by reason of the rocking of ring 29 on pins 28 which are free to shift in recesses 21 in lugs 26.

To further increase the adaptability of the mounting means for the rotary shaft 4 to meet various installation conditions I provide a coacting annular member 30 having recesses 30a. disposed diametrically therein to receive pins 3| extending inwardly from annular member 29, but displaced 90 from the position of pin members 28. There is sufficient freedom of movement between annular members 29 and 3D to compensate for difierences in various door installations which may be encountered. It will be observed that the pivotal connection of ring members 29 and 30 at a 90 displacement with respect to each other insures adjustment in two directions. That is to say, movement of rotary shaft 4 in any angular position will be compensated for by the pivotal relationship of ring members 29 and 30 for all practical purposes. It will be noted that the members 25, 29 and 39 substantially comprise a universal joint coupling especially adapted to the structure of a revolving door. In lieu thereof, I may provide various forms of flexible couplings to accomplish the same purposes.

The shaft 4 is internally recessed and screw threaded in the upper end thereof as indicated at 32. A portion of the shaft indicated at 33 is reduced in cross section and screw threaded at its lower end as indicated at 34 to engage with the screw threaded recess 32 in shaft 4. The shaft section 33 is secured to the rotatable shaft 4 by means of set screw 35. The upper end of shaft section 33 is screw-threaded as indicated at 36 and is grooved at 3'! to receive a lock pin 38 which also extends into aligned groove 30?), in annular member 38 and groove 3% in nut 39. The nut 39 engages the screw-threaded portion of shaft 33 and supports the rotatable door in proper relation to the annular member 30. The supporting forces are transmitted through the annular member 33 to pins 3| through annular member 29 through pins 33 to annular member 26 and from there to the annular bearing portion 25 which engages annular member 23. By suitable adjustment of nut 29 the required supporting position is secured.

In order to insure the proper location of the carrier l4 when the revolving door is shifted to the central assembled position, I provide a pair of latch members 4| and 42 shown more particularly in Figs. 6 and 8. The latch members 4| and 42 are secured to the horizontally projected parallel extending flanges 43 and 44 of the diametrically extending structural member The latch members 4| and 42 may be adjusted with respect to the longitudinally extending flanges 43 and 44 by means of bolt members 55 which engage the flanges 43 and 44 extending through the elongated slots Ma and 42a in the latch members 4| and 42 respectively. By reason of the elongated slots 4 la and 42a in the corresponding latch members, adjustment of the latch members longitudinally of the flanges 43 and 44 may be made within the limits of the slots. The latch members 4| and 42 are constructed in right hand and left hand forms as shown, and each have a depending wall 4| b and 42b thereon as shown, for the purpose of abutting with the edge of the longitudinally extending flanges 43 and 44. Each of the latch members includes a cam shaped surface portion 4|c and 42c formed adjacent a laterally extending locking groove 4|d and 42d. The extreme upper surface intermediate the cam shaped surface Me and groove M11 in the case of latch member 4|, and cam shaped surface 420 and groove 42d in the case of latch member 42 is flattened as indicated at Me and 42e, respectively. The function and operation of the latch members will be clear from a consideration of the arrangement of the laterally extending locking bar 45. The laterally extending locking bar 45 is substantially U-shaped in contour and has the extreme ends thereof directed downwardly in a position in which the said ends are adapted to engage the grooves Md and 4201. in the latch members 4| and 42, respectively. The locking bar 45 is secured centrally .thereof by means of strip:amernhr'er.- 46 through a welded or otherform-:ofmonnection. The strip member 46 extends centrally of the-carrier l4 and is secured'to :the sleeve member :41 which envelopes the rod l8 on which roller members H! are carried. 1 f

Sleeve 41 is adapted to freely pivot about rod I8 and allow the bar 45 to *be raised or lowered within the required 1imits.'That is tosay; the bar 45 automatically gravitates into a locking position with the ends thereof. engaged ingrooves 41d and 42din latch members 4i and 42, respectively. The manner in which the automatic locking operation is efiected will be understood when the rolling movement of the carrier I4 to central position is considered. the.v carrier [4 rolls to central position, thedepending ends of weighted bar 45 ride uponi-cam'faces Mo and 42c and over the horizontal surface portions Me and 42c and drop into the grooves Md and 42d in which the'bar 45 remains locked. The re volving door is, therefore centered inthe correct position Within the drum. When it is desired to collapse the door and shift the door wings in collapsed position to one'si'de of the drum, a suitable tool, rod or stick isinserted upwardly through the hollow central shaftto a position beneath the strip 46, and the strip elevated a sufficient amount to raise the ends of bar from engagement with the grooves Md and 42d, thereby allowing the carrier l4 to be rolledto one side ofthe-drum. Upon returning the carrier to central position the operation of locking the carrier in central position is wholly automatic as has been heretofore explained.

In order to insure the carrier against movement beyond central position I provide a laterally extending brace member 48 which is bolted to 0pposite walls of the member I by suitable-means indicated at 49 and through which thecentral screw 50 extends. The central screw 50 is ad'- justed by gripping the head5-I thereof andwhen projected the selected distance to form an abutment or stop for the end l6of carrier l4 a lock nut 52 is tightened against'the brace member 48, thereby insuring the rigid maintenancefof the stop in position. A'precision'adjustment maybe made so that the carrier is prevented from movement toward the right as viewed in Fig. 1" beyond a position where rotary shaft l'almost con.- tacts with the ends of the slots 8 and a leaving sufiicient clearance toinsure proper rotationof the revolving door.

Once the adjustments which I have explained have been made for the trolley and the suppQrting mechanism for the revolving door associated with the trolley, and the latch members properly located in position, itis unnecessary tov give further attention to the mechanical assembly of the trolley as the equipment functions indefinitely with substantially no attention. As herein before pointed out, the journaling of therevolv- 1 What .I- claim as :new and desire to secure :by

'Letters'Patent of theUnited-States is as follows:

1. A trolley forrevolving doors comprising a rail system,:a carrier movable'on said rail system 'firoina position adjacent one side of a revolving 'doordrum :to aip'osition centrally .of the drum,

latching devices on said rail system on either side of thee-enter of the drum, and means on said 'carrierf'or gravitationally engaging said latching meansior maintaining said trolley centrally of theirevolvingidoor drum.

' I2-Atrolley for-revolving doors comprising a rail system, accarrier engaging said rail system and. providing mounting means for a revolving :'door';shiftable from a collapsed position of the door'toa'n assembledposition of the door,'latching 'means .carried by'zsaid rail system on either side of the assembled position of the door, and a gravitationally operated inverted U -shaped :lockingbarmountedon said carrier and engageable with said latching means when said trolley is moved to the assembled position of the door.

I 3;:A- Itrolleyfor revolving doors comprising, in combination with a rail-system, a carrier on. said rail system movable to a position adjacent one side ofthe revolving door drum and to a'position centrally 'of'the revolving door drum, latching means carried bysaidrail system on either side of thecenter of- .the drum, and 'a gravitationally operated locking bar pivotally mounted with. re;- spect to said carrier and engageable with said latching meansfor maintaining'said carrier in a central position with respect to the drum of the revolving door.

A. A trolley for revolving doors comprising a of the drum of the revolving door, and an inverted U shaped bar member mounted centrally over the revolving door, the ends of said inverted U- shaped'member 'enga'ging'said latching members whenrsaid carrier is moved to a position centrally of the door" drum and being disengageable with respect to the latching members when the carrier is moved to a positionp remote from the center of the' drum of the revolving door.

5.. A t-rolley forrevolving doors comprising a rail system extending diagonally of the drum of a revolvingdoor, acarrier, rod members extending through the carrier, rollers carried by said rod members and engageable withsaid rail system, latch members carried by said rail system, a weighted bar, means pivotally mounted with respect to one of saidrod members on the carrier for supporting the weighted bar, said weighted bar being engageable with said latch'members when said carrier ismoved to a position centrally of the revolving door drum and being disengageable with respectrto saidlatch members when said carrier is shifted-to a positionremote fromthe center of the revolving door :drum.

6. A trolley for. revolving doors comprising a rail systern'extending diagonallyof the drum of the revolving door, a carrier, rod members extending through the carrier, rollers carried by .saidrod members and engageable with said rail system, .latch' members adjustably supportedzon said rail system, aiweightecl' bar gravitationally engageable with said latch members, means pivotally mounted with respect to one of said rod members for supporting said weighted bar, said means being shiftable to allow engagement or disengagement of said weighted bar with said .latch members;

'7. .In a revolving door, a rail system, acarrier supported by said rail system and shiftable from a position centrally of. the drum of the revolving door to a position adjacent one side thereof, latching means for said carrier in the central position, and an adjustable stop supported by said rail system for providing a limiting abutment for said carrier independent of said latching means when said carrier is moved to a position centrallyof the revolving door drum.

8. In a revolving door, a trolley structure including a guide rail, said guide rail being formed from metallic sheet material having a longitudinally extending central portion, a pair of horizontally disposed parallel extending shoulder portions and a pair of horizontally disposed parallel extending flange portions, and a carrier having roller members engageable with said shoulder portions.

9.'In a revolving door, a trolley'structure including a guide rail, said guide rail being formed from metallic sheet material having a longitudinally extending central portion, a pair of horizontally disposed parallel extending shoulder portions and a pair of horizontally disposed parallel extending flange portions, a carrier having roller members engageable with said shoulder portions, and latching means engageable with said flange portions for maintaining said carrier in a position centrally of the revolving door drum.

10. In a revolving door, a trolley structure including a guide rai1,,said guide rail being formed frommetallicshet material having a longitudinally extending central portion, a pair of horizontally disposed parallel extending shoulder portions and a pair of horizontally disposed parallel extending flange portions, a carrier having roller members engageable with said shoulder portions, latchingmeans engageable with said flange portions for maintaining said carrier in a position centrally of the revolving door drum, a bridging member extending between the side walls of said guide rail, and a screw device extending through said bridging member and adjustably secured therein for forming a limiting abutment for movement of said carrier. 1

11. In a revolving door trolley, a rail system, a carrier, sets of rollers for supporting said carrier with respect to said rail system, and means pivotally mounted about one of said sets of rollers for locking said carrier in a predetermined position'with respect to said rail system.

12. In a revolving door trolley, a carrier, an inner and an outer vertically disposed cylindrical member mounted on said carrier and spaced apart, anannular bearing therebetween, a revolving door shaft extending vertically through the inner cylindrical member, a trio of ring members pivotally mountedwith respect to each other on horizontal axes normal one to the other, means connecting the inner one of said ring members with said shaft, and means for supporting the outer one of said ring members with respect to said annular bearing.

13. In a revolving door trolley, a rail system, a carrier, a member extending laterally through each 'end of saidacarrier, roller members supported by each of said members, a sleeve concentrically. disposed about one of said members, an arm supported bysaid sleeve, a weighted yoke carried by s'aid'arm, and means for gravitationally locking the ends of said weighted yoke with respect to said rail system for locating said carrier in a predetermined position with respect to said rail system.

14. In a revolving door trolley, a rail system, a carrier, a member extending laterally through each end of said carrier, roller members supported by each of said members, a sleeve concentrically disposed about one of said members, an arm supported by said sleeve, a weighted yoke carried by said arm, and cam faced latch members carried by said rail system and gravitationally engageable with the ends of said weighted yoke for maintaining said carrier in a predetermined position.

15. In a revolving door trolley, a rail system, a carrier, a member extending laterally through each each of said carrier, roller members supported by each of said members, a sleeve concentrically disposed about one of said members, an arm supported by .said sleeve, a Weighted yoke carried by said arm, and cam faced latch members adjustably mounted on said rail system and coacting withthe depending ends of said weighted yoke for gravitationally locking said carrier in a predetermined position.

16. In a revolving door trolley, a rail system, a carrier supported on said rail system and disposed in fixed-relation. to the floor, an anti-friction rotatable bearing supported by said carrier, means for mountinga revolving door shaft between said carried and the floor with an end thereof projecting concentrically Within said bearing, and a trio of ring members pivoted with respect to each other on axes normal one to the other, one of said ring members supporting said shaft and another of said ring members mounted with respect to said bearing.

17. In a revolving door trolley, a rail system, a carrier supported on said rail system and disposed in fixed relation to the floor, a pair of concentrically disposed cylindrical members mounted on said carrier and providing an annu lar journal therebetween, an anti-friction rotatable bearing mounted in said journal, means for mounting a revolving door shaft between said carrier and the floor with an end thereof projecting concentrically within said cylindrical members, and a pair of ring members disposed between said bearing and 'said shaft, said ring members being pivoted. on axes normal to each other for compensating for differences in the angular position of the revolving door shaft.

18. In a revolving door trolley, a carrier disposed in fixed relation to the floor, and means for mounting the shaft of a revolving door between said carrier and the floor, said means including an anti-friction bearing mounted on said carried and means disposed between said bearing and said shaft for accommodating inaccuracies in the vertical alignment of said shaft.

-19."Munting means for a demountable shaft comprising a fixed bearing and a movable carrier, means for locating said carrier in fixed relation to said fixed bearing, and means for supporting a shaft between said carrier and said fixed bearingincluding an anti-friction bearing mounted on said carrier and means disposed between said anti-friction bearing and said shaft for accommodating inaccuracies in the alignment of said fixed and said anti-friction bearings.

THURLOE M. HAGENBOOK. 

